ASTROSAT CZTI

Data Quality Report

Orbit 32285

Creation date: 2024-06-27T20:38:28.643907
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_131T01_9000004696_32285cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32285cztM0_level2_quad_clean.evt
Size (bytes)550,281,600111,539,520
Size524.8 MB 106.4 MB
Events in quadrant A3,113,673731,731
Events in quadrant B5,376,188735,441
Events in quadrant C3,348,439732,872
Events in quadrant D4,366,987705,015

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138452
B0211401
C0143881
D0177221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6787801.178724%
B67871642.416384%
C67871261.856490%
D67871532.254310%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7067 6788 0 0 0.00% 0.00%
B 7067 6788 8 8 0.11% 0.12%
C 7067 6788 3 3 0.04% 0.04%
D 7067 6788 71 71 1.00% 1.05%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 12545 72.33 802 784 162.6
A 13 6 10638 60.6 802 784 162.6
A 3 137 8340 46.47 802 784 162.6
B 6 159 1909852 12549.95 791 771 152.1
B 0 190 155085 1014.43 791 771 152.1
B 15 219 116196 758.78 791 771 152.1
C 14 238 130429 721.83 769 772 179.6
C 0 10 129061 714.21 769 772 179.6
C 3 233 49905 273.53 769 772 179.6
D 8 195 983593 5426.87 771 749 181.1
D 12 233 298876 1646.14 771 749 181.1
D 7 38 82160 449.52 771 749 181.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter